Described as "an exquisite specimen of Chinese workmanship", the colorful analog bike was discovered back in 2007 in Qingdao, and it's stamped with the following phrase in Chinese: "Patented Product. Unique in the World."

By unique in the world, perhaps the invented means existing outside of China since the 19th century and in popular culture since then. That explains how this Chinese inventor got this monowheel: TIME TRAVEL.